Means for detachably connecting a raceway member to the stationary frame of a machine



L. P. CROSMAN ABLY May 15, 1945.

MEANS FOR DETACH CONNECTING A RACEWAY MEMBE TO THE STATIONARY FRAME OF A MACHINE Original Filed Aug. '7, 1942 2 Sheets-Sheet 1 Hal.

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MEANS FOR DETACHABLY CONNECTING A RACEWAY MEMBER TO THE STATIONARY FRAME OF A MACHINE Original Filed Aug. '7, 1942 2 Sheets-Sheet 2 Patented May 15, 1945 MEANS FOR DETACHABLY CONNECTING A RACEWAY MEMBER TO THE STATIONARY FRAME OF A MACHINE Loring Pickering Crosman,

South Orange, N. J.,

assignor to Monroe Calculating Machine Company, Orange, N. J a corporation of Delaware Original application August 7, 1942, Serial No.

454,025. Divided and this application March 2, 1944, Serial No. 524,756

Claims.

The invention relates to means for detachably connecting the denominationally shiftable carriage of a listing calculator or the like to the stationary framing of the machine. An object of the invention is to provide improved means of this description the advantages of which will be noted hereinafter or will be obvious.

The application is a division of my application for patent, Serial Number 454,025, filed August '7, 1942, and the invention consists in the novel construction and combinations of parts as hereinafter set forth in the claims.

In the accompanying drawings:

Figure 1 is a section taken on the line |l, Figure 2 showing the invention as applied, parts being broken away.

Figure 2 is a section taken on the line 2-2, Figure 1,

Figure 3 is a detail side view of one of the adjustable hooks, in its initial position engaging the related of the registering perforations or eyes, parts being broken away.

Figure 4 is a view similar'to Figure 3, showing the adjustable hook in the position taken upon rotation of the set screw in pressing home the projections within the seats.

The invention is shown as applied to a Monroe listing calculator, such for instance as disclosed in my Patent No, 1,946,572, dated February 13, 1934, modified in accord with the disclosure of my co-pending application for patent, Serial Number 421,803, filed December 5, 1941, upon which patent issued June 29, 1943, No. 2,323,205.

In the drawings, the numeral I designates a de nominationally shiftable carriage, having mounted thereon a rotatable platen 2, having means for rotating the same and yieldably retaining it in position as rotated.

Upper and lower spaced rails 23 of the carriage have opposite upper and lower tracks 24, and each opposite lateral tracks 25, upper and lower spaced channel bars 26 of the stationary frame having opposite upper and lower tracks and each opposite lateral tracks spaced from those of said rails. Upper and lower anti-friction means are located between said tracks and include each a U-form roller spacer provided with three notch seats, two of which seats are in the parallel arms of said spacer and the other Of which is in the cross arm of said spacer; and three anti-friction rollers of generally cylindrical form fitting in said seats, one of saidrollers being located at right angles to the other two which are parallel to each other. Two upper and two lower U-form roller spacers are provided, each couple having a, U--

form connecting bar, said spacers and their connecting bar partially embracing the related rail 23.

The upper and lower rails 23 fit at their ends within notches 3| of the carriage frame ends and a flattened tubular brace 32 has bolt connection with said rails to hold the latter securely within said notches. Tie rods 32" connect the carriage frame ends and hold the latter securely against said brace 32 to form a rigid unit.

The upper and lower spaced channel bars 26 extend at both end portions thereof beyond the stationary frame of the machine for better support of a long carriage and have a connecting member 26" rigidly secured thereto by bolts 31 to form a unit therewith, said connecting member being stiffened by having the sheet metal of which it is composed centrally channeled and provided with upper and lower forwardly bent flanges 33', thereby providing seats 33 within which fit projections 34 of the stationary frame ends. Other projections 35 of the stationary frame ends fit within perforation seats of said connecting member. The upper and lower spaced channel bars include each a rectangular cover plate 36, detachably bolted to the forwardly bent flanges 33 at 31 and respectively overlyin and underlying the upper and lower anti-friction means. These cover plates include certain of the aforesaid upper and lower and lateral tracks and being of spring metal will yieldably maintain contact of the upper and lower and lateral tracks with the upper and lower anti-friction rollers, thus doing away with lost motion without necessity for extreme accuracy of machining or manufacture.

In order to secure the stationary portion of the means for slidably mounting the carriage upon the stationary frame A of the machine, to said frame, upper and lower adjustable hooks 39 are mounted upon the ends of said frame as will be explained, and engage registering perforations or eyes 38 of the cover plates 36 and the forwardly bent flanges 33' of the parts 26 and 26". These hooks are each provided with an arcuate slot having an end offset 42 and a. forward cam edge wall 42, a set screw 40 for each hook engaging a threaded orifice of the related end of the stationary frame, said set screw having the stem thereof initially engaged within said end offset 42' of the slot and in its rotation within said threaded orifice being adapted to have rolling contact with said cam edge-wall of the slot to thereby pivotally adjust the hooks 39 from the hook ends thereof, engaged with eyes 38, as a a center in their seats in said registering rations or eyes 38 to center and press home the projections 34, 35 within the related seats. In this operation the hooks 39 are first engaged with the registering perforations or eyes 38, the tendency of the unit comprising the upper and lower channel bars and their connecting member and of the carriageas an entirety including all parts mounted thereon to part company with the stationary frame of the machine having the effect of causing the forward cam edge walls 42 of the slots of the adjustable hooks to bear against the stems of the set screws 40, whereby rotation of the set screws 40 within their threaded seats or orifices of the stationary framing will cause the upper and lower hooks to pivot from their hook ends as perfoadjust said hooks from Figure 3 to Figure 4 position and draw the unit comprising the upper and lower channel bars, their connecting member and the carriage as an entirety towards the stationary frame of the machine and press home said projections within said seats. The adjustable hooks 39 located at the one side of the machine are reversed with respect to those located at the other side of the machine in order that the set screws 40 may be right hand screws in both instances.

Each channel bar 26 of the stationary frame of the machine and its related rail 23 of the denominationally shiftable carriage constitute the members of a raceway for the related anti-friction rollers.

The invention is obviously applicable to any machine having an endwise shiftable platen or other carriage.

I claim:

1. Means for the purpose described, comprising two parts one of which has an eye and the other of which has a threaded orifice, a set screw engaging said orifice, and an adjustable hook engaging said eye and having a slot engaged by said set screw, said slot having an end offset and a cam edge wall and the stem of said set screw engaging said end offset and in the rotation of said set screw within said threaded orifice being adapted to have rolling contact with said cam edge wall to pivotally adjust said hook from the hook end thereof engaged with said eye as a center to draw the two parts together.

2. Means for the purpose described, comprising two parts one of which has at each end thereof an eye and the other of which has at each end thereof a threaded orifice, a set screw engaging each orifice, and an adjustable hook engaging each eye and having a set screw, each slot having an end offset and a cam edge wall and the stems of the set screws engaging said end offsets and in the rotation of said set screws within said threaded orifices being adapted to have rolling contact with the cam edge walls of the slots to pivotally adjust the hooks from their hook ends engaged with said eyes as centers to draw the two parts together, the hook at one end of the parts being reversed slot engaged by the related Y with respect to that at the other end whereby right hand set screws may be used in both instances.

3. Means for the purpose described, comprising a stationary raceway member having spaced seats and spaced eyes, a stationary frame the ends of which have each a projection engaging the related seat and a threaded orifice, a set screw engaging each orifice, and adjustable hooks engaging said eyes and having each a slot engaged by the related set screw, each slot having an end offset and a cam edge wall and the stems of the set screws engaging said end offsets and in the rotation of said set screws within said threaded orifices being adapted to have rolling contact with the cam edge walls of the slots to pivotally adjust the hooks from the hook ends thereof engaged with said eyes as centers to press home said projections within said seats.

4. Means for the purpose described, comprising a stationary frame the ends of which have each upper and lower projections, a stationary raceway member having upper and lower flanges overlying and underlying said projections and upper and lower seats engaged by said'projections, said flanges having each spaced eyes, the frame ends having each upper and lower threaded orifices, upper and lower set screws engaging said orifices and upper and lower adjustable hooks engaging said spaced eyes and having each a slot engaged by the related set screw, each slot having an end offset and a cam edge wall and the stems of the set screws engaging said end offsets and in the rotation of said set screws within said threaded orifices being adapted to have rolling contact with the cam edge walls of the slots to pivotally adjust said hooks 'from the hook ends thereof engaged with said eyes as centers to press home said projections within said seats.

5. Means for the purpose described, comprising a stationary frame the ends of which have each upper and lower projections, a stationary raceway member having upper and lower flanges overlying and underlying said projections and upper and lower seats engaged by said projections, said flanges having each spaced eyes, the frame ends having each upper and lower threaded orifices, upper and lower set screws engaging said orifices and upper and lower adjustable hooks engaging said spaced eyes and having each a slot engaged by the related set screw, each slot having an end offset and a cam edge wall and the stems of the set screws engaging said end offets and in the rotation of said set screws within said threaded orifices being adapted to have rolling contact with the cam edge walls of the slots to pivotally adjust said hooks from the hook ends thereof engaged with said eyes as centers to press home said projections within said seats, the hooks at one end of the frame being reversed with respect to those at the other end whereby right hand set screws may be used in both instances.

LORING PICKERING CROSMAN. 

